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Subject[PATCH v2] lightnvm: make geometry structures 2.0 ready
Date
From: Matias Bjørling <matias@cnexlabs.com>

Prepare for the 2.0 revision by adapting the geometry
structures to coexist with the 1.2 revision.

Changes since v1:
* Keep num_pln, num_pg, and fpg_sz variable for sysfs.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
drivers/lightnvm/core.c | 89 +++++++++++++++++++---------------------
drivers/lightnvm/pblk-core.c | 6 +--
drivers/lightnvm/pblk-init.c | 62 ++++++++++++++--------------
drivers/lightnvm/pblk-recovery.c | 2 +-
drivers/lightnvm/pblk-sysfs.c | 6 +--
drivers/lightnvm/pblk.h | 8 ++--
drivers/nvme/host/lightnvm.c | 79 ++++++++++++++++++++++-------------
include/linux/lightnvm.h | 52 ++++++++++++++---------
8 files changed, 169 insertions(+), 135 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 52059dd..6d6d2c1 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -98,7 +98,7 @@ static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev, int clear)
if (clear) {
for (j = 0; j < ch_map->nr_luns; j++) {
int lun = j + lun_offs[j];
- int lunid = (ch * dev->geo.luns_per_chnl) + lun;
+ int lunid = (ch * dev->geo.nr_luns) + lun;

WARN_ON(!test_and_clear_bit(lunid,
dev->lun_map));
@@ -124,10 +124,10 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
struct ppa_addr *luns;
int nr_luns = lun_end - lun_begin + 1;
int luns_left = nr_luns;
- int nr_chnls = nr_luns / dev->geo.luns_per_chnl;
- int nr_chnls_mod = nr_luns % dev->geo.luns_per_chnl;
- int bch = lun_begin / dev->geo.luns_per_chnl;
- int blun = lun_begin % dev->geo.luns_per_chnl;
+ int nr_chnls = nr_luns / dev->geo.nr_luns;
+ int nr_chnls_mod = nr_luns % dev->geo.nr_luns;
+ int bch = lun_begin / dev->geo.nr_luns;
+ int blun = lun_begin % dev->geo.nr_luns;
int lunid = 0;
int lun_balanced = 1;
int prev_nr_luns;
@@ -148,15 +148,15 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
if (!luns)
goto err_luns;

- prev_nr_luns = (luns_left > dev->geo.luns_per_chnl) ?
- dev->geo.luns_per_chnl : luns_left;
+ prev_nr_luns = (luns_left > dev->geo.nr_luns) ?
+ dev->geo.nr_luns : luns_left;
for (i = 0; i < nr_chnls; i++) {
struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[i + bch];
int *lun_roffs = ch_rmap->lun_offs;
struct nvm_ch_map *ch_map = &dev_map->chnls[i];
int *lun_offs;
- int luns_in_chnl = (luns_left > dev->geo.luns_per_chnl) ?
- dev->geo.luns_per_chnl : luns_left;
+ int luns_in_chnl = (luns_left > dev->geo.nr_luns) ?
+ dev->geo.nr_luns : luns_left;

if (lun_balanced && prev_nr_luns != luns_in_chnl)
lun_balanced = 0;
@@ -193,8 +193,8 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
memcpy(&tgt_dev->geo, &dev->geo, sizeof(struct nvm_geo));
/* Target device only owns a portion of the physical device */
tgt_dev->geo.nr_chnls = nr_chnls;
- tgt_dev->geo.nr_luns = nr_luns;
- tgt_dev->geo.luns_per_chnl = (lun_balanced) ? prev_nr_luns : -1;
+ tgt_dev->geo.all_luns = nr_luns;
+ tgt_dev->geo.nr_luns = (lun_balanced) ? prev_nr_luns : -1;
tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
tgt_dev->q = dev->q;
tgt_dev->map = dev_map;
@@ -414,7 +414,7 @@ static int nvm_register_map(struct nvm_dev *dev)
for (i = 0; i < dev->geo.nr_chnls; i++) {
struct nvm_ch_map *ch_rmap;
int *lun_roffs;
- int luns_in_chnl = dev->geo.luns_per_chnl;
+ int luns_in_chnl = dev->geo.nr_luns;

ch_rmap = &rmap->chnls[i];

@@ -717,10 +717,10 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
struct nvm_geo *geo = &dev->geo;
int blk, offset, pl, blktype;

- if (nr_blks != geo->blks_per_lun * geo->plane_mode)
+ if (nr_blks != geo->nr_chks * geo->plane_mode)
return -EINVAL;

- for (blk = 0; blk < geo->blks_per_lun; blk++) {
+ for (blk = 0; blk < geo->nr_chks; blk++) {
offset = blk * geo->plane_mode;
blktype = blks[offset];

@@ -736,7 +736,7 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
blks[blk] = blktype;
}

- return geo->blks_per_lun;
+ return geo->nr_chks;
}
EXPORT_SYMBOL(nvm_bb_tbl_fold);

@@ -758,43 +758,40 @@ static int nvm_core_init(struct nvm_dev *dev)
struct nvm_geo *geo = &dev->geo;
int ret;

+ memcpy(&geo->ppaf, &id->ppaf, sizeof(struct nvm_addr_format));
+
+ if (grp->mtype != 0) {
+ pr_err("nvm: memory type not supported\n");
+ return -EINVAL;
+ }
+
/* Whole device values */
geo->nr_chnls = grp->num_ch;
- geo->luns_per_chnl = grp->num_lun;
+ geo->nr_luns = grp->num_lun;

- /* Generic device values */
- geo->pgs_per_blk = grp->num_pg;
- geo->blks_per_lun = grp->num_blk;
- geo->nr_planes = grp->num_pln;
- geo->fpg_size = grp->fpg_sz;
- geo->pfpg_size = grp->fpg_sz * grp->num_pln;
+ /* Generic device geometry values */
+ geo->ws_min = grp->ws_min;
+ geo->ws_opt = grp->ws_opt;
+ geo->ws_seq = grp->ws_seq;
+ geo->ws_per_chk = grp->ws_per_chk;
+ geo->nr_chks = grp->num_chk;
geo->sec_size = grp->csecs;
geo->oob_size = grp->sos;
- geo->sec_per_pg = grp->fpg_sz / grp->csecs;
geo->mccap = grp->mccap;
- memcpy(&geo->ppaf, &id->ppaf, sizeof(struct nvm_addr_format));
-
- geo->plane_mode = NVM_PLANE_SINGLE;
geo->max_rq_size = dev->ops->max_phys_sect * geo->sec_size;

- if (grp->mpos & 0x020202)
- geo->plane_mode = NVM_PLANE_DOUBLE;
- if (grp->mpos & 0x040404)
- geo->plane_mode = NVM_PLANE_QUAD;
+ geo->sec_per_chk = grp->clba;
+ geo->sec_per_lun = geo->sec_per_chk * geo->nr_chks;
+ geo->all_luns = geo->nr_luns * geo->nr_chnls;

- if (grp->mtype != 0) {
- pr_err("nvm: memory type not supported\n");
- return -EINVAL;
- }
-
- /* calculated values */
+ /* 1.2 spec device geometry values */
+ geo->plane_mode = 1 << geo->ws_seq;
+ geo->nr_planes = geo->ws_opt / geo->ws_min;
+ geo->sec_per_pg = geo->ws_min;
geo->sec_per_pl = geo->sec_per_pg * geo->nr_planes;
- geo->sec_per_blk = geo->sec_per_pl * geo->pgs_per_blk;
- geo->sec_per_lun = geo->sec_per_blk * geo->blks_per_lun;
- geo->nr_luns = geo->luns_per_chnl * geo->nr_chnls;

- dev->total_secs = geo->nr_luns * geo->sec_per_lun;
- dev->lun_map = kcalloc(BITS_TO_LONGS(geo->nr_luns),
+ dev->total_secs = geo->all_luns * geo->sec_per_lun;
+ dev->lun_map = kcalloc(BITS_TO_LONGS(geo->all_luns),
sizeof(unsigned long), GFP_KERNEL);
if (!dev->lun_map)
return -ENOMEM;
@@ -854,8 +851,8 @@ static int nvm_init(struct nvm_dev *dev)

pr_info("nvm: registered %s [%u/%u/%u/%u/%u/%u]\n",
dev->name, geo->sec_per_pg, geo->nr_planes,
- geo->pgs_per_blk, geo->blks_per_lun,
- geo->nr_luns, geo->nr_chnls);
+ geo->ws_per_chk, geo->nr_chks,
+ geo->all_luns, geo->nr_chnls);
return 0;
err:
pr_err("nvm: failed to initialize nvm\n");
@@ -946,12 +943,12 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create)

if (s->lun_begin == -1 && s->lun_end == -1) {
s->lun_begin = 0;
- s->lun_end = dev->geo.nr_luns - 1;
+ s->lun_end = dev->geo.all_luns - 1;
}

- if (s->lun_begin > s->lun_end || s->lun_end >= dev->geo.nr_luns) {
+ if (s->lun_begin > s->lun_end || s->lun_end >= dev->geo.all_luns) {
pr_err("nvm: lun out of bound (%u:%u > %u)\n",
- s->lun_begin, s->lun_end, dev->geo.nr_luns - 1);
+ s->lun_begin, s->lun_end, dev->geo.all_luns - 1);
return -EINVAL;
}

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index ce90213..dd041a9 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -979,7 +979,7 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,

/* Start metadata */
smeta_buf->seq_nr = cpu_to_le64(line->seq_nr);
- smeta_buf->window_wr_lun = cpu_to_le32(geo->nr_luns);
+ smeta_buf->window_wr_lun = cpu_to_le32(geo->all_luns);

/* Fill metadata among lines */
if (cur) {
@@ -1032,7 +1032,7 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
lm->sec_per_line);
bitmap_or(line->map_bitmap, line->map_bitmap, l_mg->bb_aux,
lm->sec_per_line);
- line->sec_in_line -= geo->sec_per_blk;
+ line->sec_in_line -= geo->sec_per_chk;
if (bit >= lm->emeta_bb)
nr_bb++;
}
@@ -1746,7 +1746,7 @@ void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct pblk_lun *rlun;
- int nr_luns = geo->nr_luns;
+ int nr_luns = geo->all_luns;
int bit = -1;

while ((bit = find_next_bit(lun_bitmap, nr_luns, bit + 1)) < nr_luns) {
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index f62112b..2af1b0a 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -169,8 +169,8 @@ static int pblk_set_ppaf(struct pblk *pblk)
}
ppaf.ch_len = power_len;

- power_len = get_count_order(geo->luns_per_chnl);
- if (1 << power_len != geo->luns_per_chnl) {
+ power_len = get_count_order(geo->nr_luns);
+ if (1 << power_len != geo->nr_luns) {
pr_err("pblk: supports only power-of-two LUN config.\n");
return -EINVAL;
}
@@ -254,7 +254,7 @@ static int pblk_core_init(struct pblk *pblk)
struct nvm_geo *geo = &dev->geo;

pblk->pgs_in_buffer = NVM_MEM_PAGE_WRITE * geo->sec_per_pg *
- geo->nr_planes * geo->nr_luns;
+ geo->nr_planes * geo->all_luns;

if (pblk_init_global_caches(pblk))
return -ENOMEM;
@@ -270,21 +270,22 @@ static int pblk_core_init(struct pblk *pblk)
if (!pblk->gen_ws_pool)
goto free_page_bio_pool;

- pblk->rec_pool = mempool_create_slab_pool(geo->nr_luns, pblk_rec_cache);
+ pblk->rec_pool = mempool_create_slab_pool(geo->all_luns,
+ pblk_rec_cache);
if (!pblk->rec_pool)
goto free_gen_ws_pool;

- pblk->r_rq_pool = mempool_create_slab_pool(geo->nr_luns,
+ pblk->r_rq_pool = mempool_create_slab_pool(geo->all_luns,
pblk_g_rq_cache);
if (!pblk->r_rq_pool)
goto free_rec_pool;

- pblk->e_rq_pool = mempool_create_slab_pool(geo->nr_luns,
+ pblk->e_rq_pool = mempool_create_slab_pool(geo->all_luns,
pblk_g_rq_cache);
if (!pblk->e_rq_pool)
goto free_r_rq_pool;

- pblk->w_rq_pool = mempool_create_slab_pool(geo->nr_luns,
+ pblk->w_rq_pool = mempool_create_slab_pool(geo->all_luns,
pblk_w_rq_cache);
if (!pblk->w_rq_pool)
goto free_e_rq_pool;
@@ -409,7 +410,7 @@ static int pblk_bb_discovery(struct nvm_tgt_dev *dev, struct pblk_lun *rlun)
u8 *blks;
int nr_blks, ret;

- nr_blks = geo->blks_per_lun * geo->plane_mode;
+ nr_blks = geo->nr_chks * geo->plane_mode;
blks = kmalloc(nr_blks, GFP_KERNEL);
if (!blks)
return -ENOMEM;
@@ -482,20 +483,21 @@ static int pblk_luns_init(struct pblk *pblk, struct ppa_addr *luns)
int i, ret;

/* TODO: Implement unbalanced LUN support */
- if (geo->luns_per_chnl < 0) {
+ if (geo->nr_luns < 0) {
pr_err("pblk: unbalanced LUN config.\n");
return -EINVAL;
}

- pblk->luns = kcalloc(geo->nr_luns, sizeof(struct pblk_lun), GFP_KERNEL);
+ pblk->luns = kcalloc(geo->all_luns, sizeof(struct pblk_lun),
+ GFP_KERNEL);
if (!pblk->luns)
return -ENOMEM;

- for (i = 0; i < geo->nr_luns; i++) {
+ for (i = 0; i < geo->all_luns; i++) {
/* Stripe across channels */
int ch = i % geo->nr_chnls;
int lun_raw = i / geo->nr_chnls;
- int lunid = lun_raw + ch * geo->luns_per_chnl;
+ int lunid = lun_raw + ch * geo->nr_luns;

rlun = &pblk->luns[i];
rlun->bppa = luns[lunid];
@@ -590,8 +592,8 @@ static void pblk_set_provision(struct pblk *pblk, long nr_free_blks)
* on user capacity consider only provisioned blocks
*/
pblk->rl.total_blocks = nr_free_blks;
- pblk->rl.nr_secs = nr_free_blks * geo->sec_per_blk;
- pblk->capacity = provisioned * geo->sec_per_blk;
+ pblk->rl.nr_secs = nr_free_blks * geo->sec_per_chk;
+ pblk->capacity = provisioned * geo->sec_per_chk;
atomic_set(&pblk->rl.free_blocks, nr_free_blks);
}

@@ -683,7 +685,7 @@ static int pblk_lines_init(struct pblk *pblk)
int i, ret;

pblk->min_write_pgs = geo->sec_per_pl * (geo->sec_size / PAGE_SIZE);
- max_write_ppas = pblk->min_write_pgs * geo->nr_luns;
+ max_write_ppas = pblk->min_write_pgs * geo->all_luns;
pblk->max_write_pgs = (max_write_ppas < nvm_max_phys_sects(dev)) ?
max_write_ppas : nvm_max_phys_sects(dev);
pblk_set_sec_per_write(pblk, pblk->min_write_pgs);
@@ -693,26 +695,26 @@ static int pblk_lines_init(struct pblk *pblk)
return -EINVAL;
}

- div_u64_rem(geo->sec_per_blk, pblk->min_write_pgs, &mod);
+ div_u64_rem(geo->sec_per_chk, pblk->min_write_pgs, &mod);
if (mod) {
pr_err("pblk: bad configuration of sectors/pages\n");
return -EINVAL;
}

- l_mg->nr_lines = geo->blks_per_lun;
+ l_mg->nr_lines = geo->nr_chks;
l_mg->log_line = l_mg->data_line = NULL;
l_mg->l_seq_nr = l_mg->d_seq_nr = 0;
l_mg->nr_free_lines = 0;
bitmap_zero(&l_mg->meta_bitmap, PBLK_DATA_LINES);

- lm->sec_per_line = geo->sec_per_blk * geo->nr_luns;
- lm->blk_per_line = geo->nr_luns;
- lm->blk_bitmap_len = BITS_TO_LONGS(geo->nr_luns) * sizeof(long);
+ lm->sec_per_line = geo->sec_per_chk * geo->all_luns;
+ lm->blk_per_line = geo->all_luns;
+ lm->blk_bitmap_len = BITS_TO_LONGS(geo->all_luns) * sizeof(long);
lm->sec_bitmap_len = BITS_TO_LONGS(lm->sec_per_line) * sizeof(long);
- lm->lun_bitmap_len = BITS_TO_LONGS(geo->nr_luns) * sizeof(long);
+ lm->lun_bitmap_len = BITS_TO_LONGS(geo->all_luns) * sizeof(long);
lm->mid_thrs = lm->sec_per_line / 2;
lm->high_thrs = lm->sec_per_line / 4;
- lm->meta_distance = (geo->nr_luns / 2) * pblk->min_write_pgs;
+ lm->meta_distance = (geo->all_luns / 2) * pblk->min_write_pgs;

/* Calculate necessary pages for smeta. See comment over struct
* line_smeta definition
@@ -742,12 +744,12 @@ static int pblk_lines_init(struct pblk *pblk)
goto add_emeta_page;
}

- lm->emeta_bb = geo->nr_luns > i ? geo->nr_luns - i : 0;
+ lm->emeta_bb = geo->all_luns > i ? geo->all_luns - i : 0;

lm->min_blk_line = 1;
- if (geo->nr_luns > 1)
+ if (geo->all_luns > 1)
lm->min_blk_line += DIV_ROUND_UP(lm->smeta_sec +
- lm->emeta_sec[0], geo->sec_per_blk);
+ lm->emeta_sec[0], geo->sec_per_chk);

if (lm->min_blk_line > lm->blk_per_line) {
pr_err("pblk: config. not supported. Min. LUN in line:%d\n",
@@ -772,7 +774,7 @@ static int pblk_lines_init(struct pblk *pblk)
goto fail_free_bb_template;
}

- bb_distance = (geo->nr_luns) * geo->sec_per_pl;
+ bb_distance = (geo->all_luns) * geo->sec_per_pl;
for (i = 0; i < lm->sec_per_line; i += bb_distance)
bitmap_set(l_mg->bb_template, i, geo->sec_per_pl);

@@ -844,7 +846,7 @@ static int pblk_lines_init(struct pblk *pblk)
pblk_set_provision(pblk, nr_free_blks);

/* Cleanup per-LUN bad block lists - managed within lines on run-time */
- for (i = 0; i < geo->nr_luns; i++)
+ for (i = 0; i < geo->all_luns; i++)
kfree(pblk->luns[i].bb_list);

return 0;
@@ -858,7 +860,7 @@ static int pblk_lines_init(struct pblk *pblk)
fail_free_meta:
pblk_line_meta_free(pblk);
fail:
- for (i = 0; i < geo->nr_luns; i++)
+ for (i = 0; i < geo->all_luns; i++)
kfree(pblk->luns[i].bb_list);

return ret;
@@ -1041,13 +1043,13 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,

blk_queue_write_cache(tqueue, true, false);

- tqueue->limits.discard_granularity = geo->pgs_per_blk * geo->pfpg_size;
+ tqueue->limits.discard_granularity = geo->sec_per_chk * geo->sec_size;
tqueue->limits.discard_alignment = 0;
blk_queue_max_discard_sectors(tqueue, UINT_MAX >> 9);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, tqueue);

pr_info("pblk init: luns:%u, lines:%d, secs:%llu, buf entries:%u\n",
- geo->nr_luns, pblk->l_mg.nr_lines,
+ geo->all_luns, pblk->l_mg.nr_lines,
(unsigned long long)pblk->rl.nr_secs,
pblk->rwb.nr_entries);

diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index eadb3eb..ceec12d 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -188,7 +188,7 @@ static int pblk_calc_sec_in_line(struct pblk *pblk, struct pblk_line *line)
int nr_bb = bitmap_weight(line->blk_bitmap, lm->blk_per_line);

return lm->sec_per_line - lm->smeta_sec - lm->emeta_sec[0] -
- nr_bb * geo->sec_per_blk;
+ nr_bb * geo->sec_per_chk;
}

struct pblk_recov_alloc {
diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c
index cd49e88..5cee2ac 100644
--- a/drivers/lightnvm/pblk-sysfs.c
+++ b/drivers/lightnvm/pblk-sysfs.c
@@ -28,7 +28,7 @@ static ssize_t pblk_sysfs_luns_show(struct pblk *pblk, char *page)
ssize_t sz = 0;
int i;

- for (i = 0; i < geo->nr_luns; i++) {
+ for (i = 0; i < geo->all_luns; i++) {
int active = 1;

rlun = &pblk->luns[i];
@@ -238,7 +238,7 @@ static ssize_t pblk_sysfs_lines(struct pblk *pblk, char *page)

sz = snprintf(page, PAGE_SIZE - sz,
"line: nluns:%d, nblks:%d, nsecs:%d\n",
- geo->nr_luns, lm->blk_per_line, lm->sec_per_line);
+ geo->all_luns, lm->blk_per_line, lm->sec_per_line);

sz += snprintf(page + sz, PAGE_SIZE - sz,
"lines:d:%d,l:%d-f:%d,m:%d/%d,c:%d,b:%d,co:%d(d:%d,l:%d)t:%d\n",
@@ -287,7 +287,7 @@ static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page)
"blk_line:%d, sec_line:%d, sec_blk:%d\n",
lm->blk_per_line,
lm->sec_per_line,
- geo->sec_per_blk);
+ geo->sec_per_chk);

return sz;
}
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 9096103..92eb935 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -907,7 +907,7 @@ static inline int pblk_pad_distance(struct pblk *pblk)
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;

- return NVM_MEM_PAGE_WRITE * geo->nr_luns * geo->sec_per_pl;
+ return NVM_MEM_PAGE_WRITE * geo->all_luns * geo->sec_per_pl;
}

static inline int pblk_dev_ppa_to_line(struct ppa_addr p)
@@ -1212,10 +1212,10 @@ static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev,

if (!ppa->c.is_cached &&
ppa->g.ch < geo->nr_chnls &&
- ppa->g.lun < geo->luns_per_chnl &&
+ ppa->g.lun < geo->nr_luns &&
ppa->g.pl < geo->nr_planes &&
- ppa->g.blk < geo->blks_per_lun &&
- ppa->g.pg < geo->pgs_per_blk &&
+ ppa->g.blk < geo->nr_chks &&
+ ppa->g.pg < geo->ws_per_chk &&
ppa->g.sec < geo->sec_per_pg)
continue;

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index ee521e5..5891c35 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -135,7 +135,7 @@ struct nvme_nvm_id_group {
__u8 num_lun;
__u8 num_pln;
__u8 rsvd1;
- __le16 num_blk;
+ __le16 num_chk;
__le16 num_pg;
__le16 fpg_sz;
__le16 csecs;
@@ -215,36 +215,57 @@ static inline void _nvme_nvm_check_size(void)
static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
{
struct nvme_nvm_id_group *src;
- struct nvm_id_group *dst;
+ struct nvm_id_group *grp;
+ int sec_per_pg, sec_per_pl, pg_per_blk;

if (nvme_nvm_id->cgrps != 1)
return -EINVAL;

src = &nvme_nvm_id->groups[0];
- dst = &nvm_id->grp;
-
- dst->mtype = src->mtype;
- dst->fmtype = src->fmtype;
- dst->num_ch = src->num_ch;
- dst->num_lun = src->num_lun;
- dst->num_pln = src->num_pln;
-
- dst->num_pg = le16_to_cpu(src->num_pg);
- dst->num_blk = le16_to_cpu(src->num_blk);
- dst->fpg_sz = le16_to_cpu(src->fpg_sz);
- dst->csecs = le16_to_cpu(src->csecs);
- dst->sos = le16_to_cpu(src->sos);
-
- dst->trdt = le32_to_cpu(src->trdt);
- dst->trdm = le32_to_cpu(src->trdm);
- dst->tprt = le32_to_cpu(src->tprt);
- dst->tprm = le32_to_cpu(src->tprm);
- dst->tbet = le32_to_cpu(src->tbet);
- dst->tbem = le32_to_cpu(src->tbem);
- dst->mpos = le32_to_cpu(src->mpos);
- dst->mccap = le32_to_cpu(src->mccap);
-
- dst->cpar = le16_to_cpu(src->cpar);
+ grp = &nvm_id->grp;
+
+ grp->mtype = src->mtype;
+ grp->fmtype = src->fmtype;
+
+ grp->num_ch = src->num_ch;
+ grp->num_lun = src->num_lun;
+
+ grp->num_chk = le16_to_cpu(src->num_chk);
+ grp->csecs = le16_to_cpu(src->csecs);
+ grp->sos = le16_to_cpu(src->sos);
+
+ pg_per_blk = le16_to_cpu(src->num_pg);
+ sec_per_pg = le16_to_cpu(src->fpg_sz) / grp->csecs;
+ sec_per_pl = sec_per_pg * src->num_pln;
+ grp->clba = sec_per_pl * pg_per_blk;
+ grp->ws_per_chk = pg_per_blk;
+
+ grp->mpos = le32_to_cpu(src->mpos);
+ grp->cpar = le16_to_cpu(src->cpar);
+ grp->mccap = le32_to_cpu(src->mccap);
+
+ grp->ws_opt = grp->ws_min = sec_per_pg;
+ grp->ws_seq = NVM_IO_SNGL_ACCESS;
+
+ if (grp->mpos & 0x020202) {
+ grp->ws_seq = NVM_IO_DUAL_ACCESS;
+ grp->ws_opt <<= 1;
+ } else if (grp->mpos & 0x040404) {
+ grp->ws_seq = NVM_IO_QUAD_ACCESS;
+ grp->ws_opt <<= 2;
+ }
+
+ grp->trdt = le32_to_cpu(src->trdt);
+ grp->trdm = le32_to_cpu(src->trdm);
+ grp->tprt = le32_to_cpu(src->tprt);
+ grp->tprm = le32_to_cpu(src->tprm);
+ grp->tbet = le32_to_cpu(src->tbet);
+ grp->tbem = le32_to_cpu(src->tbem);
+
+ /* 1.2 compatibility */
+ grp->num_pln = src->num_pln;
+ grp->num_pg = le16_to_cpu(src->num_pg);
+ grp->fpg_sz = le16_to_cpu(src->fpg_sz);

return 0;
}
@@ -293,7 +314,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_nvm_command c = {};
struct nvme_nvm_bb_tbl *bb_tbl;
- int nr_blks = geo->blks_per_lun * geo->plane_mode;
+ int nr_blks = geo->nr_chks * geo->plane_mode;
int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
int ret = 0;

@@ -334,7 +355,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
goto out;
}

- memcpy(blks, bb_tbl->blk, geo->blks_per_lun * geo->plane_mode);
+ memcpy(blks, bb_tbl->blk, geo->nr_chks * geo->plane_mode);
out:
kfree(bb_tbl);
return ret;
@@ -773,7 +794,7 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
} else if (strcmp(attr->name, "num_planes") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pln);
} else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */
- return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_blk);
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_chk);
} else if (strcmp(attr->name, "num_pages") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pg);
} else if (strcmp(attr->name, "page_size") == 0) {
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index e93021a..750a662 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -158,12 +158,16 @@ struct nvm_id_group {
u8 fmtype;
u8 num_ch;
u8 num_lun;
- u8 num_pln;
- u16 num_blk;
- u16 num_pg;
- u16 fpg_sz;
+ u16 num_chk;
+ u16 clba;
u16 csecs;
u16 sos;
+
+ u16 ws_min;
+ u16 ws_opt;
+ u16 ws_seq;
+ u16 ws_per_chk;
+
u32 trdt;
u32 trdm;
u32 tprt;
@@ -173,6 +177,11 @@ struct nvm_id_group {
u32 mpos;
u32 mccap;
u16 cpar;
+
+ /* 1.2 compatibility */
+ u8 num_pln;
+ u16 num_pg;
+ u16 fpg_sz;
};

struct nvm_addr_format {
@@ -258,31 +267,36 @@ enum {
NVM_BLK_ST_BAD = 0x8, /* Bad block */
};

+
/* Device generic information */
struct nvm_geo {
+ /* generic geometry */
int nr_chnls;
- int nr_luns;
- int luns_per_chnl; /* -1 if channels are not symmetric */
- int nr_planes;
- int sec_per_pg; /* only sectors for a single page */
- int pgs_per_blk;
- int blks_per_lun;
- int fpg_size;
- int pfpg_size; /* size of buffer if all pages are to be read */
+ int all_luns; /* across channels */
+ int nr_luns; /* per channel */
+ int nr_chks; /* per lun */
+
int sec_size;
int oob_size;
int mccap;
- struct nvm_addr_format ppaf;

- /* Calculated/Cached values. These do not reflect the actual usable
- * blocks at run-time.
- */
+ int sec_per_chk;
+ int sec_per_lun;
+
+ int ws_min;
+ int ws_opt;
+ int ws_seq;
+ int ws_per_chk;
+
int max_rq_size;
+
+ struct nvm_addr_format ppaf;
+
+ /* Legacy 1.2 specific geometry */
int plane_mode; /* drive device in single, double or quad mode */
-
+ int nr_planes;
+ int sec_per_pg; /* only sectors for a single page */
int sec_per_pl; /* all sectors across planes */
- int sec_per_blk;
- int sec_per_lun;
};

/* sub-device structure */
--
2.9.3
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